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ciscoCiscoCISCO-SA-20191016-WLC-SSH-DOS
HistoryOct 16, 2019 - 4:00 p.m.

Cisco Wireless LAN Controller Secure Shell Denial of Service Vulnerability

2019-10-1616:00:00
tools.cisco.com
132

EPSS

0.002

Percentile

52.6%

A vulnerability in the Secure Shell (SSH) session management for Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

The vulnerability exists because the SSH process is not properly deleted when an SSH connection to the device is disconnected. An attacker could exploit this vulnerability by repeatedly opening SSH connections to an affected device. A successful exploit could allow the attacker to exhaust system resources by initiating multiple SSH connections to the device that are not effectively terminated, which could result in a DoS condition.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-wlc-ssh-dos [“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-wlc-ssh-dos”]

Affected configurations

Vulners
Node
ciscowireless_lan_controllerMatch7.0
OR
ciscowireless_lan_controllerMatch7.1
OR
ciscowireless_lan_controllerMatch7.2
OR
ciscowireless_lan_controllerMatch7.4
OR
ciscowireless_lan_controllerMatch7.3
OR
ciscowireless_lan_controllerMatch7.5
OR
ciscowireless_lan_controllerMatch7.6
OR
ciscowireless_lan_controllerMatch8.0
OR
ciscowireless_lan_controllerMatch8.1
OR
ciscowireless_lan_controllerMatch8.3
OR
ciscowireless_lan_controllerMatch8.2
OR
ciscowireless_lan_controllerMatch8.5
OR
ciscowireless_lan_controllerMatch8.4
OR
ciscowireless_lan_controllerMatchany
OR
ciscowireless_lan_controllerMatch7.0.98.0
OR
ciscowireless_lan_controllerMatch7.0.116.0
OR
ciscowireless_lan_controllerMatch7.0.98.218
OR
ciscowireless_lan_controllerMatch7.0.220.0
OR
ciscowireless_lan_controllerMatch7.0.240.0
OR
ciscowireless_lan_controllerMatch7.0.250.0
OR
ciscowireless_lan_controllerMatch7.0.252.0
OR
ciscowireless_lan_controllerMatch7.0.230.0
OR
ciscowireless_lan_controllerMatch7.0.235.0
OR
ciscowireless_lan_controllerMatch7.0.235.3
OR
ciscowireless_lan_controllerMatch7.0.251.2
OR
ciscowireless_lan_controllerMatchany
OR
ciscowireless_lan_controllerMatch7.1.91.0
OR
ciscowireless_lan_controllerMatchany
OR
ciscowireless_lan_controllerMatch7.2.103.0
OR
ciscowireless_lan_controllerMatch7.2.110.0
OR
ciscowireless_lan_controllerMatch7.2.111.3
OR
ciscowireless_lan_controllerMatch7.2.115.2
OR
ciscowireless_lan_controllerMatch7.4.100.0
OR
ciscowireless_lan_controllerMatch7.4.100.60
OR
ciscowireless_lan_controllerMatch7.4.110.0
OR
ciscowireless_lan_controllerMatch7.4.121.0
OR
ciscowireless_lan_controllerMatch7.4.140.0
OR
ciscowireless_lan_controllerMatch7.4.130.0
OR
ciscowireless_lan_controllerMatch7.4.150.0
OR
ciscowireless_lan_controllerMatchany
OR
ciscowireless_lan_controllerMatch7.3.101.0
OR
ciscowireless_lan_controllerMatch7.3.112.0
OR
ciscowireless_lan_controllerMatch7.5.102.0
OR
ciscowireless_lan_controllerMatch7.6.100.0
OR
ciscowireless_lan_controllerMatch7.6.120.0
OR
ciscowireless_lan_controllerMatch7.6.110.0
OR
ciscowireless_lan_controllerMatch7.6.130.0
OR
ciscowireless_lan_controllerMatch8.0.100.0
OR
ciscowireless_lan_controllerMatch8.0.115.0
OR
ciscowireless_lan_controllerMatch8.0.120.0
OR
ciscowireless_lan_controllerMatch8.0.121.0
OR
ciscowireless_lan_controllerMatch8.0.135.0
OR
ciscowireless_lan_controllerMatch8.0.133.0
OR
ciscowireless_lan_controllerMatch8.0.132.0
OR
ciscowireless_lan_controllerMatch8.0.110.0
OR
ciscowireless_lan_controllerMatch8.0.150.0
OR
ciscowireless_lan_controllerMatch8.0.140.0
OR
ciscowireless_lan_controllerMatch8.0.152.0
OR
ciscowireless_lan_controllerMatch8.1.111.0
OR
ciscowireless_lan_controllerMatch8.1.131.0
OR
ciscowireless_lan_controllerMatch8.1.122.0
OR
ciscowireless_lan_controllerMatch8.1.102.0
OR
ciscowireless_lan_controllerMatch8.3.102.0
OR
ciscowireless_lan_controllerMatch8.3.111.0
OR
ciscowireless_lan_controllerMatch8.3.112.0
OR
ciscowireless_lan_controllerMatch8.3.121.0
OR
ciscowireless_lan_controllerMatch8.3.122.0
OR
ciscowireless_lan_controllerMatch8.3.130.0
OR
ciscowireless_lan_controllerMatch8.3.131.0
OR
ciscowireless_lan_controllerMatch8.3.132.0
OR
ciscowireless_lan_controllerMatch8.3.133.0
OR
ciscowireless_lan_controllerMatch8.3.140.0
OR
ciscowireless_lan_controllerMatch8.3.141.0
OR
ciscowireless_lan_controllerMatch8.3.143.0
OR
ciscowireless_lan_controllerMatch8.3.150.0
OR
ciscowireless_lan_controllerMatch8.2.121.0
OR
ciscowireless_lan_controllerMatch8.2.130.0
OR
ciscowireless_lan_controllerMatch8.2.100.0
OR
ciscowireless_lan_controllerMatch8.2.110.0
OR
ciscowireless_lan_controllerMatch8.2.111.0
OR
ciscowireless_lan_controllerMatch8.2.141.0
OR
ciscowireless_lan_controllerMatch8.2.151.0
OR
ciscowireless_lan_controllerMatch8.2.160.0
OR
ciscowireless_lan_controllerMatch8.2.161.0
OR
ciscowireless_lan_controllerMatch8.2.164.0
OR
ciscowireless_lan_controllerMatch8.2.166.0
OR
ciscowireless_lan_controllerMatch8.2.170.0
OR
ciscowireless_lan_controllerMatch8.5.103.0
OR
ciscowireless_lan_controllerMatch8.5.105.0
OR
ciscowireless_lan_controllerMatch8.5.110.0
OR
ciscowireless_lan_controllerMatch8.5.120.0
OR
ciscowireless_lan_controllerMatch8.5.131.0
OR
ciscowireless_lan_controllerMatch8.5.135.0
OR
ciscowireless_lan_controllerMatch8.5.140.0
OR
ciscowireless_lan_controllerMatch8.4.100.0
VendorProductVersionCPE
ciscowireless_lan_controller7.0cpe:2.3:h:cisco:wireless_lan_controller:7.0:*:*:*:*:*:*:*
ciscowireless_lan_controller7.1cpe:2.3:h:cisco:wireless_lan_controller:7.1:*:*:*:*:*:*:*
ciscowireless_lan_controller7.2cpe:2.3:h:cisco:wireless_lan_controller:7.2:*:*:*:*:*:*:*
ciscowireless_lan_controller7.4cpe:2.3:h:cisco:wireless_lan_controller:7.4:*:*:*:*:*:*:*
ciscowireless_lan_controller7.3cpe:2.3:h:cisco:wireless_lan_controller:7.3:*:*:*:*:*:*:*
ciscowireless_lan_controller7.5cpe:2.3:h:cisco:wireless_lan_controller:7.5:*:*:*:*:*:*:*
ciscowireless_lan_controller7.6cpe:2.3:h:cisco:wireless_lan_controller:7.6:*:*:*:*:*:*:*
ciscowireless_lan_controller8.0cpe:2.3:h:cisco:wireless_lan_controller:8.0:*:*:*:*:*:*:*
ciscowireless_lan_controller8.1cpe:2.3:h:cisco:wireless_lan_controller:8.1:*:*:*:*:*:*:*
ciscowireless_lan_controller8.3cpe:2.3:h:cisco:wireless_lan_controller:8.3:*:*:*:*:*:*:*
Rows per page:
1-10 of 921

EPSS

0.002

Percentile

52.6%

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